Arabic transliteration system -- Introductory matters. A critical text for the Qur'ān? -- Descriptions and pictures of the manuscripts -- Observing the textual variants. Orthographic variants involving long vowels -- Copyist mistakes -- Diacritical mark variants and variants affecting grammar -- Rasm variants -- Variant verse divisions -- Physical corrections to manuscripts -- Evaluating the textual variants. Variants in manuscripts compared to those in Islamic records -- Intentionality and non-intentionality with variants -- Oral and written textual transmission -- Conclusions. Concluding reflections. -- Bibliography -- indexes.